Now is a great time to get out looking at reservoir margins in most parts of the UK. The dry summer has left many reservoirs extremely low, and recent rain has encouraged a flush of the ephemeral species that love this habitat. The drawdown zone of ponds and pools also supports these types of communities and are well worth a look at this time of year.
Recent visits to the Usk and Llwyn-on reservoirs in Brecknock yielded some rather nice species including sheets of fruiting Ephemerum stoloniferum, lots of young Riccia huebeneriana thalli and scattered plants of very happy-looking Physcomitrium sphaericum.
So why not get out and visit your local reservoir if you are fortunate enough to live close to one. Do expect to spend a lot of time on hands and knees though – and an illuminated hand lens is definitely a good idea!
Hopefully the following photos will whet your appetite…
Claire Halpin, October 2022